Throw in towel or what?

I have a big relationship predicament or how to act. I just got out of a 3 year relationship at the beginning of December. I really thought me and my ex would get back together. Ended up we really resent each other and things are better apart. Now after 3 months or so of hanging around, I realize that this girl I work with had had a crush on me for quite a while. Given I am 24 and just graduated college and she is 26....she is two years older. I could kind of tell she liked me from the start by some of her flirting actions. When we finally started conversing I really resisted her because I was not ready to start anything or interested in anybody. I did really think she was a sweetheart and a very beautiful girl but I just was not ready even though she kept counseling me through the breakup and being so sweet about everything. We started talking more and more over the next couple of weeks and I knew she really did like me. I started to love talking to Ms. April more and more. Well we ended up at the same party one Saturday night and we danced and kissed. Then we both said we liked each other. Then over the next couple of weeks we hungout some here and there just casually. Well me and her went out on a double date with some friends and then i took her to another party. We really did have fun that night and then the next week she got really all over me and I loved her being there. I really did start to like hanging out with her and I didn't want stuff to move fast, we were just hangin out but it seemed like things could materialize. Well then the next week we hung out little bit each day and we got to joking about ual things. I made it known that I was attracted to her but she said she had to be in a deep relationship like six months or better and her only partners were those three previous boyfriends she dated which I do believe is true. She is not a liar. Well we had got to pionate kissing a few times before, but one evening we got into very deep kissing and things led up to going to her bedroom. She said she wanted to....only if i was ready for her to be emotionally attached to me. I said yes that's fine April. She said your the only guy this is going to happen with that i havn't been dating for that long. And we ended up having that evening. Well next day rolls around and its a very akward situation looking at her at work, but we were both smiling so much and she kept joking about us taking a 30 minute break to go somewhere. Well that evening she got very sick., and it turned out she got to be very sick for 3-4 days and wasn't able to hangout. That was fine with me no big deal. Well it seemed like she started to be very unavailable to hangout and started to blame it on her nursing school cles and this and that. Well we still texted and text ed a lot over the next two weeks and she kept wanting to talk about how great was and wanted to again and blah blah this and that about doing it and all that stuff. We finally had another date after all of her cancellations. This time she was acting DIFFERENT. She didn't want to hold hands and didn't want to act all kissy and cuddly and ended up cutting it short. I ask her whats wrong she said "im sorry but im not ready for a relationship right now, I like you but I want to be friends first and lets see where that takes us and she continued to talk about all of her walls she has built up to protect her emotions and all that girl stuff but she really did see things happening later on but she wanted to build a big friendship first. Well we went on talked some here and there....hungout occasionally....she wouldnt cuddle and would only kiss goodbye.... over the next couple of months....had that same conversation again......well I did leave the company for a better job and this week she started talking to me again and continued to let me know how much she missed me and we started talking some again, but I was being resistant because I liked her then she backed off. Well we conversated today and she brought up she was ready for her special someone. And then it got brought up about me and her. She kept asking how I felt and i kept putting it on her. She was like I really think we should talk more. and i kept on punching information out of her. She stated she wanted to talk more and maybe lead up to talking. Then I kept asking her what she wanted and all and she was like my next relationship i want to settle down and be very serious, not to scare you or anything and she just has up walls and emotional barriers. I asked her what she saw and she said I see us together in the future and something really serious but she just wanted to talk and eventually lead up to stuff no rush. She said friends first my sister did that now shes married to him, but im not sure if im pissin in the wind or not? She comes over last night we hungout kissed goodbye and had a good talk. What do I do? I mean she texts me and calls a lot but I don' t know